Shareholders in runaway data centre success AirTrunk are “very pleased” with interest shown by private equity and infrastructure-fund suitors, putting it on track to secure a $15 billion-plus valuation and potentially one of the year’s biggest deals when its auction wraps up.

AirTrunk’s second-largest investor, Canadian pension fund PSP Investments, said it was “very proud” of the Australian company’s growth since investing four years ago, but the time was right for the “capital hungry” developer to review its strategic options and think about new ownership.